Wrench



A. AND 0. F. CARLSDN.

WRENCH.

APPLlcATlon man ram/5,1921.'

1,412,552: Patented Apr. 11, 1922.

` INVENTORS V y efgm ATTORNEY.

UNITED STATESPATENT OFFICE.

ALFRED CARLSON AND OSCAR FREDERICK CARLSON, AF REARVILLE, ALBERTA,

' CANADA.

WRENCIL Application filed May 5,

Y 1o all Lo/0m t may concern.'

Be it known that we. inrnnn'CxnLsox and OSCAR F. CARLSON, citizens of the United States, residing at Rearville, in the Province of Alberta and Dominion of Canada, have invented certain new and useful In'iprovements in Wrenches, of which the following is a specification.

rThis invention relates to `improvements in machine bolt wrenches and one `object is to provide such a device adapted for `ready access to bolts in positions ordinarily ditiicult to reach. A further object is to provide a. wrench of this type having one jaw that is practically automatic in its operation and that is adapted to lind7 the nut of a holt when the head thereof has been located'by the. opposite jaw. Adjustments of the automatic jaw are possible to permit the vdevice to be used upon bolts of more than ordinary length, bolts located at an angle with the work, etc.

lith the toregoing;` and other objects in view the invention consists in the combination and arrangement of parts to be hereinafter fully described, pointed out in the appended claims and illustrated in the accompanying drawing` which forms a part of this application and in which- Fig, 1 a view of our improved wrench in side elevation, part-ly in section. illustrating,T its applicat-ion, the dotted lines denoting an altered position of the adjustable parts of the wrench.

2 is a view of the brace showing its connection to the spindle.

Fig. 3 is a fragmentary view of the lower jaw.

Like reference characters denote correspendingr parts throughoutthe several views.

The Awrench comprises a frame 1 substantially the shape of a carpenters square inverted with the exception of the hent pro jcction or ting'er 2 which is formed terminally with the perforation 3a. To the longer side of the frame adjacent its free termination the lower jaw-section 3 of the wrench is pivotally secured by the pin 4, the cooperating'vjaw-section 5 being partly hollow to receive one. end of the section 3 and being' formed with an elongated slot 6 in which a pin 7, carried by the jaw-section 3, rides whereby said jaw-sections are adjust-able relatively. The jaw-section 3 lits snugly into the section so that ordinarily friction will Specification of Letters Patent.

Patented Apr. 11, 192.2.

Serial No. 467,020.

hold the sections in an adjusted position, further adjustment being manually effected by the operator sliding` the section 5 upon the section 3.

djustably secured to one end of the jawsection 5 by the sot screw S is the angular end-piece 9 formed at its free yend with the socket 10 adapted to releasablv receive and frictionallyY retain the close-1i no cap 1l. these caps being' made to tit nuts 12 of a variety of shapes, the exterior of the. caps being standard, however, for cooperation with the socket 10.

rThe pivoted end of the jaw-section 3 is formed with the toothed segment in mesh with the toothed end 14 of the jaw 15 which is yfulcrumed to the frame 1 upon the pin 16. a portion of that section of the jaw l5 between 'the pin 16 and the teeth 14 being regularly curved for contact with the periphery of the cam 17 supported by the frame and integral with one end of thelever 18.

. The free end of the jaw is twisted and perforated and it is practically co-extensive with thefinger 2 and spaced away therefrom by the head 19 arranged upon the spindle 2O that extends through the perforated portions of the members 2, 15, one end of said spindle being formed with a sockety adapted to releasably receive and frictionally retain the cap 21, similar to the cap 11, the exterior of this end of the spindle being threaded to receive the retainingcollar 22. The spindle beyond the lever 15, with relation to the head 19, is provided with another head 23 and terminates in the lug 24 to which the brace 25 is secured.

The brace 25 serves as a. handle to conveniently carry the tool and in use theca 21 is manually applied to the bolt head 26 to be removed from or tightened upon the work 27. The lever 18 is now manually moved from normal position shown in dotted lines, Fig'. 1, to the position shown in full lines. This movement causes the lower jaw, th rough the operation of the cam 17 upon the jaw 15, to ride upon its pivot from substantially the position shown dotted to the position shown in full lines in engagement with the work 12. The lever 18 and cam 17 now lock the jaws in their relative positions and this position can only be changed by the operator manually moving` the lever back to the position shown dotted.

Should the cap 11 carried by the lower jaw not engage the Work when the movement ot a braee connected to said spindle, a, toothed the jaw 3, 5 toward the jaw l5 takes place the end-piece i) may be adjusted or the jaw .section 5 moved relatively to the-section 3.

Ordinarily the lovver or sectional jaw will automatically grip the Work When caused to move. in the manner described. The operator now rotates the brace 25 and tightens or loosens the bolt 26. By moving the lever 18 to dotted position the sectional jaw is removed from the Work and the spindle and connect-ione may then be manually lifted from the Work by means of the brace or lia-ndle 25.

llVhat is claimed is l. In a Wrench, a frame, a finger integral with said frame, a spindle carried by said finger, a cap for said Spindle, abraee connected to said spindle, a toothed jaw fulorumed to said trame and engaging said spindle, a sectional toothed jaw pivoted to said frame, the teeth of said jaws meshing` with each other, a cap carried by said seotional jaw, and a lever tnlorumed to said :trame and operatively engaging the first named jaw.

2. In a Wrench, a frame, an extension iinger integral With said trame, a spindle canv ried by said finger, a cap for said spindle,

jaw fulcrumed to said frame With one end engaging,1 said spindle and spaced awayv from said finger, a` sectional toothed jaw pivoted to said frame, the teeth ot said jaws mesh ing with each other, a Cap carried by said if:

sectional aw, and a cam lever iiulcrumed to said frame for operative engagement with the first named jaw.

3. In a Wrench, a trame,V a spindle supported by said vFrameq a nap carried by said spindle, a brace connected to said spindle, a jaw ulcrumed. to said frame and engaging said spindle, e cam lever carried by said 'frame and operatively engaging said aw,

sectional javv pivoted to said frame and in engagement With the Said first named jaw for movement synchronously herewith, and a cap carried by said sectional jaw.

ln testimony that We claim the foregoing as our own We have hereto aiiixed our sig- Y natures in the Witnesses.

ALFRED CARLSON. OSCAR FREDERlGK CARLEDN.

Witnesses JOHN SAHLIN, Enron SAHLIN.

presence of two subscribing 

